"""
Example usage script for the network scanner API.

This script demonstrates how to use the network scanner programmatically.
"""

import asyncio
import time
from typing import Optional
import httpx


class NetworkScannerClient:
    """Client for interacting with the network scanner API."""
    
    def __init__(self, base_url: str = "http://localhost:8000"):
        """Initialize client with API base URL."""
        self.base_url = base_url
        self.api_url = f"{base_url}/api"
    
    async def start_scan(
        self,
        network_range: str,
        scan_type: str = "quick",
        use_nmap: bool = False
    ) -> int:
        """
        Start a new network scan.
        
        Args:
            network_range: Network in CIDR notation (e.g., '192.168.1.0/24')
            scan_type: Type of scan ('quick', 'standard', 'deep')
            use_nmap: Whether to use nmap
            
        Returns:
            Scan ID
        """
        async with httpx.AsyncClient() as client:
            response = await client.post(
                f"{self.api_url}/scans/start",
                json={
                    "network_range": network_range,
                    "scan_type": scan_type,
                    "include_service_detection": True,
                    "use_nmap": use_nmap
                }
            )
            response.raise_for_status()
            data = response.json()
            return data['scan_id']
    
    async def get_scan_status(self, scan_id: int) -> dict:
        """Get status of a scan."""
        async with httpx.AsyncClient() as client:
            response = await client.get(f"{self.api_url}/scans/{scan_id}/status")
            response.raise_for_status()
            return response.json()
    
    async def wait_for_scan(self, scan_id: int, timeout: int = 600) -> dict:
        """
        Wait for a scan to complete.
        
        Args:
            scan_id: Scan ID
            timeout: Maximum time to wait in seconds
            
        Returns:
            Final scan status
        """
        start_time = time.time()
        
        while time.time() - start_time < timeout:
            status = await self.get_scan_status(scan_id)
            
            print(f"Scan {scan_id} status: {status['status']} - "
                  f"Found {status['hosts_found']} hosts")
            
            if status['status'] in ['completed', 'failed', 'cancelled']:
                return status
            
            await asyncio.sleep(5)
        
        raise TimeoutError(f"Scan {scan_id} did not complete within {timeout} seconds")
    
    async def get_hosts(self, status: Optional[str] = None) -> list:
        """Get list of discovered hosts."""
        async with httpx.AsyncClient() as client:
            params = {}
            if status:
                params['status'] = status
            
            response = await client.get(f"{self.api_url}/hosts", params=params)
            response.raise_for_status()
            return response.json()
    
    async def get_topology(self, include_offline: bool = False) -> dict:
        """Get network topology."""
        async with httpx.AsyncClient() as client:
            response = await client.get(
                f"{self.api_url}/topology",
                params={"include_offline": include_offline}
            )
            response.raise_for_status()
            return response.json()
    
    async def get_statistics(self) -> dict:
        """Get network statistics."""
        async with httpx.AsyncClient() as client:
            response = await client.get(f"{self.api_url}/hosts/statistics")
            response.raise_for_status()
            return response.json()


async def main():
    """Main example function."""
    
    # Initialize client
    client = NetworkScannerClient()
    
    # Example 1: Start a quick scan
    print("=" * 60)
    print("Example 1: Starting a quick scan of local network")
    print("=" * 60)
    
    network_range = "192.168.1.0/24"  # Change to your network
    scan_id = await client.start_scan(network_range, scan_type="quick")
    print(f"Started scan {scan_id} for {network_range}")
    
    # Wait for scan to complete
    print("\nWaiting for scan to complete...")
    final_status = await client.wait_for_scan(scan_id)
    
    print(f"\nScan completed!")
    print(f"Status: {final_status['status']}")
    print(f"Hosts found: {final_status['hosts_found']}")
    print(f"Ports scanned: {final_status['ports_scanned']}")
    
    # Example 2: Get discovered hosts
    print("\n" + "=" * 60)
    print("Example 2: Getting discovered hosts")
    print("=" * 60)
    
    hosts = await client.get_hosts(status="online")
    print(f"\nFound {len(hosts)} online hosts:")
    
    for host in hosts[:10]:  # Show first 10
        services = host.get('services', [])
        print(f"\n  IP: {host['ip_address']}")
        print(f"  Hostname: {host.get('hostname', 'N/A')}")
        print(f"  Status: {host['status']}")
        print(f"  Services: {len(services)}")
        
        if services:
            print("  Open Ports:")
            for svc in services[:5]:  # Show first 5 services
                print(f"    - {svc['port']}/{svc['protocol']} "
                      f"({svc.get('service_name', 'unknown')})")
    
    # Example 3: Get network topology
    print("\n" + "=" * 60)
    print("Example 3: Getting network topology")
    print("=" * 60)
    
    topology = await client.get_topology()
    print(f"\nTopology:")
    print(f"  Nodes: {len(topology['nodes'])}")
    print(f"  Edges: {len(topology['edges'])}")
    
    # Show node types
    node_types = {}
    for node in topology['nodes']:
        node_type = node['type']
        node_types[node_type] = node_types.get(node_type, 0) + 1
    
    print(f"\n  Node types:")
    for node_type, count in node_types.items():
        print(f"    - {node_type}: {count}")
    
    # Example 4: Get statistics
    print("\n" + "=" * 60)
    print("Example 4: Getting network statistics")
    print("=" * 60)
    
    stats = await client.get_statistics()
    print(f"\nNetwork Statistics:")
    print(f"  Total hosts: {stats['total_hosts']}")
    print(f"  Online hosts: {stats['online_hosts']}")
    print(f"  Offline hosts: {stats['offline_hosts']}")
    print(f"  Total services: {stats['total_services']}")
    print(f"  Total scans: {stats['total_scans']}")
    
    if stats.get('most_common_services'):
        print(f"\n  Most common services:")
        for svc in stats['most_common_services'][:5]:
            print(f"    - {svc['service_name']}: {svc['count']}")
    
    print("\n" + "=" * 60)
    print("Examples completed!")
    print("=" * 60)


if __name__ == "__main__":
    asyncio.run(main())